TRUSS HEAD/Self tapping, Stainless steel, 8R, 1/2 8RX1/2THBSS pack of 100

These truss head tapping screws with type B threads are self-tapping and machined from stainless steel.
 

This truss head Phillips tapping screw (Alternate Part# 8RX1/2THB) is made from stainless steel, has a 1/2-inch length, and a #8 Type B thread size.